single phase

  1. P

    Single phase motor fault finding.

    Looking for some help with motor fault finding. I've got a small woodworking router that i broke a couple of years back, given that we've just been covering very basic motor theory at college i want to see if i can either fix it or at least understand what's wrong with it if its terminal! This...
  2. C

    3 phase to dual single phase

    Hi, I have 2 single phase consumer units I want to feed from a 3 phase supply. There currently exists some 3 phase SWA, but it doesn't reach either of the consumer units. The installation is indoors. Each consumer unit has a RCD on it already. Can I just use a junction box at the end of the...
  3. M

    motor 3p running two run caps 15mf to single phase not running

    hi help required if poss? called out machine not running food shredder quite small found 15mf cap lid was cracked (cap no capacitance on terminals) 2 caps in series 15mf motor taken of one cap so bridged out thermal overload got machine to run very slow stopped. could not get 15mf cap but...
  4. cashnotakite

    single phase RCBO'S on a 3phase board

    hi I'm having a problem with an RCBO tripping out and it is unlikely to be a N-E fault. I suspect the associated neutrals have been terminated into the wrong RCBO even though there is no load connected as all the RCBO's feed unused sockets. The board itself is 3 phase and I am wondering if this...
  5. P

    Need to switch neutral for single phase domestic DB

    Hello, I was doing a job today connecting up the SWA I've put in to supply the electric gates. The DB is a three phase connected up as single phase. They have taken the 25 MM into the L1 of the 3 pole Main switch but the neutral goes straight to the N bar. Its a PME system. Am I right to say...
  6. M

    Metalclad DB, Single Phase with 12 useable ways - No RCD's required

    I'm trying to source a suitable metalclad DB with a metal door/flap, and with an IP rating as high as is available off the shelf. This to be located in a Chinese takeaway that has a high pollution of the atmosphere, caused by cooking oil/fat. It may be necessary to fit a standard metalclad DB...
  7. S

    17kW single phase inverter?

    We have a customer with an interesting problem! Proposed install is on a split phase supply @ 460V 50kW system with existing DNO permission - As there is a new transformer on site, the DNO have said they will make an exception and allow up to 200kW on the split phase so 50kW no problem. The...
  8. C

    wylex nhtn6mr to feed single phase c/u

    been to look at a job today, i don't normally have anything to do with 3 phase so don't shout at me to much, customer as just moved into a unit which as the above distribution board in supplying power to the original sockets, lights and alarm system, he as put the first fix in himself for some...
  9. S

    3 phase or single phase

    Hello all I have been asked to supply power and cableing for an out side event total loading will be 41kva no three phase required .but my question is as I have never really needed a large genny am I better off using a single or three phase genny thanks for any advice given paul
  10. D

    Single phase 32/16 amp sockets from 3 phase

    Hi, First post on the forums here and some very useful information. I am wondering is it possible to install single phase sockets (both 16amp and 32amp) using a 3 phase supply? I am intending to get a qualified electrician in to carry out the work but want to ask is it possible firstly...
  11. G

    Single phase installation off a three phase cutout and distributors fuse details??

    Hi guys, Just finished a job installing communal lighting and power in 7 blocks of flats, The supply for each building is the same a TNS 3 phase cutout with a feed jumped off one of the phases to the meter and from the meter supplying our single phase CU, the flats are then jumped off various...
  12. C

    Taking a single phase suply from a 3phase transformer.....

    Have got a Three phase transformer wired in star on the 7th floor of a part built tower block and the builder wants another tranny on the 8th floor to supply the works on that floor. There is already a single phase tranny on the 8th.. (not yet wired up) Is it possible to take a single phase...
  13. B

    Coin operated single phase meter

    As above anybody recommend or point me in the right direction for somewhere to get a coin operated single phase electric meter ?
  14. M

    Cable size for single phase motor control panel

    Hi all, Your help would be appreciated. We are mainly domestic sparx so I havn't much experience with cable sizing for motors. On site, we need to supply a motor control panel which operates the sewage pump. There are in fact two pumps but I think they switch between periodically to prolong...
  15. i=p/u

    Single phase switched fuse

    Can you get 40A switched fuse for single phase as need price for them , can't find them online for guide, we link would help thx
  16. V

    Elster AS230 GSM / WAN / LAN / PLC Single Phase Meter

    Does anyone know which companies provide monitoring services for the Elster AS230 Single Phase Meter? How much do they cost for GSM / SIM access, for each data interval? What SIM cards are required to access these services? What software / hardware is required to read this meter via LAN / WAN...
  17. R

    four post car ramp 3 phase to single phase conversion

    Hi , I am new to the forum not a sparky but Physics background .had to make the decision with a car lift whether to buy an inverter or change to a single phase motor . My lift is a Bradbury 40 series 4 tonne .The motor does not need to reverse as it is gravity that takes it down .Also purely...
  18. Tontoe

    Three CUs attached to 100A single phase supply

    Hi Had a call out to a customer yesterday who'd had a cooker delivered from John Lewis, but the sparky had refused to connect it as the supply was 32A on a 4mm cable. Manufacturer instructions specify 6mm cable but don't give rating of appliance, and it's not on the data plate, but manufacturer...
  19. S

    2 x SB4000-TLs or 1 x SB7000HV on single phase supply

    I have been asked to do a quote for an 8kWp system on a commercial building which only has a single phase supply. After running different systems through various software it seems that I have 2 options; 1) Install 1 SB7000HV inverter 2) Install 2 x SB4000-TLs Option 1 is the most cost...
  20. D

    Fault finding single phase motors

    Ok got called in regards to somebody's electrica gate not working. Power supply all seems good. After removing the motor i attempted to test the windings. ( i really havent done much with motors) the motor is single phase. Has a N , 2 feeds/supplys/windings. ? is this one :- Electric Gates...
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